摘要
连续时间信号的傅里叶变换是"信号与系统"课程的一项重要内容,而傅里叶变换的性质又是其中的重点。本文分析了傅里叶变换各个性质之间的关系,提出了一种立足于时域、频域对应关系、以展缩特性为切入点、重点分析各性质物理含义的一种教学方法,最后给出了利用对称性实现性质互推的方法。
The Fourier transform of continuous-time signals is an important content in Signals and Systems course.And the property of the Fourier transform is the emphasis.Firstly,the relations of the Fourier transform properties are analysed.Secondly,a teaching method is put forward,in which the relation of time domain and frequency domain is emphasized,the scalling property is professed firstly,and the physical meanings of properties are explained as emphasis.Lastly,the methods of derivation one another are given using symmetry property.
出处
《电气电子教学学报》
2013年第2期66-68,共3页
Journal of Electrical and Electronic Education
基金
湖南省普通高校教学改革立项项目(湘教通〔2012〕401号)
关键词
信号与系统
傅里叶变换
展缩特性
对称性
signals and systems
Fourier transform
scalling property
symmetry property
